WO2018058682A1 - Procédé, dispositif et système de transmission de service - Google Patents

Procédé, dispositif et système de transmission de service Download PDF

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Publication number
WO2018058682A1
WO2018058682A1 PCT/CN2016/101404 CN2016101404W WO2018058682A1 WO 2018058682 A1 WO2018058682 A1 WO 2018058682A1 CN 2016101404 W CN2016101404 W CN 2016101404W WO 2018058682 A1 WO2018058682 A1 WO 2018058682A1
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WO
WIPO (PCT)
Prior art keywords
network element
user plane
plane network
tunnel endpoint
resource management
Prior art date
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PCT/CN2016/101404
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English (en)
Chinese (zh)
Inventor
银宇
戚彩霞
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华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201680089779.6A priority Critical patent/CN109804710B/zh
Priority to EP16917432.3A priority patent/EP3512300B1/fr
Priority to PCT/CN2016/101404 priority patent/WO2018058682A1/fr
Publication of WO2018058682A1 publication Critical patent/WO2018058682A1/fr
Priority to US16/370,638 priority patent/US10979285B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/22—Manipulation of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0686—Additional information in the notification, e.g. enhancement of specific meta-data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5007—Internet protocol [IP] addresses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5061—Pools of addresses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4604—LAN interconnection over a backbone network, e.g. Internet, Frame Relay
    • H04L2012/4629—LAN interconnection over a backbone network, e.g. Internet, Frame Relay using multilayer switching, e.g. layer 3 switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2101/00—Indexing scheme associated with group H04L61/00
    • H04L2101/60—Types of network addresses
    • H04L2101/668—Internet protocol [IP] address subnets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a service transmission method, device, and system.
  • the user equipment (English: User Equipment, UE) accesses the mobile communication network through a local wireless access network
  • the control plane English: Control Plane, CP, or
  • the core control function (CCF) network element is responsible for connection management, security authentication, mobility management, and location management of user equipment.
  • User planes (English: User Plane, UP) are responsible for forwarding user service data.
  • the user plane network element responsible for forwarding user service data in Figure 1 may be faulty. In this case, a method is needed to prevent the user service data from being affected in the case of a user plane network element failure. transmission.
  • the user plane network element of the next-generation mobile communication network is faulty, it is usually referred to the processing method of the data gateway (English: Packet Data Network Gateway, P-GW) in the fourth generation (English: 4Generation, 4G) communication network.
  • P-GW Packet Data Network Gateway
  • 4G 4Generation, 4G
  • the control plane network element 2 includes: 1) when the control plane network element detects that the user plane network element 1 is faulty, the affected user equipment is notified, and the user equipment is notified to re-establish the data connection; 2) the user equipment receives After the notification of the control plane network element, a connection establishment request is initiated, requesting to re-establish the data connection; 3) after receiving the request of the user equipment, the control plane network element selects a new user plane network element 2 to establish a data connection; 4) the user plane The network element 2 replies to the connection establishment response, and allocates a network protocol (English: Internet Protocol, IP) address to the user equipment; 5) the control plane network element replies to the user equipment with a connection establishment response. In this way, the user equipment establishes a data connection on the new user plane network element, and the new user plane network element forwards the service data of the user equipment.
  • a network protocol English: Internet Protocol, IP
  • the user equipment can establish a data connection with other user plane network elements to ensure normal transmission of user service data.
  • the IP address of the user equipment that communicates with the application is redistributed because the user plane network element is temporarily unavailable to forward the user service data and the data connection is established. This will cause the service interruption of the user equipment and affect the user's business experience.
  • the present application provides a service transmission method, device, and system to solve the problem of service interruption of a user equipment caused by a user plane network element failure.
  • the present invention provides a service transmission method, which is performed by a resource management node, and may include: acquiring a user equipment IP address pool, and dividing the user equipment IP address pool into at least one user equipment IP address segment, according to at least one The user equipment IP address segment determines at least one tunnel endpoint identifier index, and allocates at least one user equipment IP address segment and at least one tunnel endpoint identifier index to the at least one user plane network element.
  • the IP address pool of the user equipment is referred to as the IP address pool.
  • the IP address segment of the user equipment is referred to as the IP address segment.
  • the IP address and the tunnel endpoint identifier are managed by the newly added resource management node in the network, and the correspondence between the tunnel endpoint identifier index, the user equipment IP address segment, and the user plane network element is maintained, and the user equipment IP address, tunnel endpoint identifier, and There is no necessary binding relationship between the user plane network elements.
  • the resource management node can dynamically adjust the user equipment IP address, tunnel endpoint identifier, and user plane network according to the conditions in the network (such as user plane network element fault/overload). In the case of the meta-relationship, the user service data is forwarded through the new user plane network element without changing the user equipment IP address and the tunnel endpoint identifier.
  • the user equipment and the user plane network element are not required to re-establish the data connection, and the user equipment is avoided.
  • the method does not need to perform the configuration of the service data forwarding on the user plane network element, simplifies the configuration of the user plane network element, and realizes the configuration of the user plane network element, thereby supporting the plug and play of the user plane network element.
  • the method may further include:
  • the resource management node notifies the correspondence between the IP address segment and the user plane network element And notifying the forwarding node, and notifying the correspondence between the tunnel endpoint identifier index and the user plane network element to the second forwarding node.
  • the resource management node can directly notify the forwarding node of the corresponding relationship, and the forwarding node sends the service data of the user equipment to the corresponding user plane network element according to the corresponding relationship to implement the forwarding of the service data.
  • the method may further include:
  • the resource management node notifies the transmission control node of the correspondence between the IP address segment, the tunnel endpoint identifier index, and the user plane network element; the correspondence relationship is used to notify the transmission control node to notify the correspondence between the IP address segment and the user plane network element
  • the first forwarding node notifies the second forwarding node of the correspondence between the tunnel endpoint identifier index and the user plane network element.
  • the mapping between the IP address segment, the tunnel endpoint identifier, and the user plane NE refers to the mapping between the IP address segment, the tunnel endpoint identifier, and the user plane NE identifier.
  • the user plane NE identifier includes the user plane NE. IP address, or the ID of the user plane network element.
  • the resource management node may first notify the transmission control node of the correspondence between the IP address segment, the tunnel endpoint identifier index, and the user plane network element, and then the transmission control node notifies the corresponding node to the forwarding node, and the forwarding node responds according to the correspondence.
  • the relationship sends the service data of the user equipment to the corresponding user plane network element to implement forwarding of the service data.
  • the resource management node allocates at least one IP address segment and at least one tunnel endpoint identifier index to the at least one user plane network.
  • the yuan can include:
  • the resource management node allocates at least one IP address segment and at least one tunnel endpoint identifier to the at least one user plane network element according to the information of the user plane network element.
  • the information of the user plane network element includes: the resource management node is located in the network. The number of user plane network elements and/or the capacity of the user plane network element.
  • IP address segment and the tunnel endpoint identifier index determined according to the IP address segment are allocated to the same user plane network element.
  • the IP address segments assigned by different user plane network elements are different.
  • IP address segment and the tunnel endpoint identifier are allocated according to the number and capacity of the user plane network elements in the network, and load balancing of each user plane network element is implemented.
  • the resource management node may allocate the divided at least one IP address segment and the at least one tunnel endpoint identifier index to the newly added user plane network element.
  • the service of the user equipment is not interrupted, and the IP address and tunnel endpoint identifier associated with the user equipment are allocated to the newly added user plane network element, and at the same time, a new user is added to the network.
  • the configuration of the network element is free of configuration, and the plug-and-play of the newly added user plane network element is achieved.
  • the IP address segment and the tunnel corresponding to the user plane network element may be used.
  • the endpoint identifier index is allocated to other available user plane network elements, and the service data is forwarded through other available user plane network elements.
  • the first aspect or the first aspect is combined.
  • the resource management node may obtain part or all of the IP address segments allocated to the first user plane network element, and use part or all of the IP address segments allocated to the first user plane network element as the IP address pool;
  • the resource management node allocates at least one IP address segment and at least one tunnel endpoint identification index to at least one user plane network element other than the first user plane network element.
  • the first user plane network element may be a user plane network element that is faulty or overloaded.
  • the user equipment IP address segment and the tunnel endpoint identification index assigned to the faulty or overloaded user plane network element can be reassigned to other normal user plane network elements through the resource management node, so that the user plane network element fails/ In the case of overload or the like, the user plane network element that forwards the service data packet of the user equipment is changed without interrupting the service of the user equipment.
  • the present invention provides a service transmission method, which is performed by a transmission control node, and the method may include: acquiring an IP address segment and a tunnel end sent by a resource management node Notifying the correspondence between the IP address segment and the user plane network element to the first forwarding node, and notifying the correspondence between the tunnel endpoint identifier index and the user plane network element to the corresponding relationship between the point identifier index and the user plane network element Two forwarding nodes.
  • the mapping between the IP address segment, the tunnel endpoint identifier, and the user plane network element includes: an IP address segment, a tunnel endpoint identifier, and a user plane NE identifier; the user plane NE identifier includes the user plane network element. IP address, or the ID of the user plane network element.
  • the resource management node may first notify the transmission control node of the correspondence between the IP address segment, the tunnel endpoint identifier index, and the user plane network element, and then the transmission control node notifies the corresponding node to the forwarding node, and the forwarding node responds according to the correspondence.
  • the relationship sends the service data of the user equipment to the corresponding user plane network element to implement forwarding of the service data.
  • the present invention provides a service transmission method, which is performed by a first forwarding node.
  • the method may include: obtaining a correspondence between an IP address segment and a user plane network element, according to the IP address segment and the user plane network element.
  • the correspondence between the two ends forwards the downlink service data sent by the packet data network to the user plane network element.
  • the first forwarding node may be a forwarding node between the user plane network element and the packet data network in the network where the resource management node is located.
  • the first forwarding node can forward the downlink service data sent by the received packet data network to the corresponding user plane network element according to the corresponding relationship acquired by the first forwarding node.
  • the first forwarding node may directly obtain the correspondence between the IP address segment notified by the resource management node and the user plane network element; The correspondence between the IP address segment notified by the transmission control node and the user plane network element.
  • the present invention provides a service transmission method, which is performed by a second forwarding node, and the method may include: obtaining a correspondence between a tunnel endpoint identifier index and a user plane network element, according to the tunnel endpoint identifier index and the user plane network.
  • the correspondence between the elements forwards the uplink service data sent by the access network to the user plane network element.
  • the second forwarding node can be implemented according to the corresponding relationship acquired by itself.
  • the received uplink service data sent by the access network is forwarded to the corresponding user plane network element.
  • the second forwarding node may directly obtain the correspondence between the tunnel endpoint identifier index notified by the resource management node and the user plane network element; Obtain a correspondence between the tunnel endpoint identifier index notified by the transmission control node and the user plane network element.
  • the present invention provides a resource management node, where the resource management node includes:
  • An obtaining unit configured to obtain an IP address pool
  • a determining unit configured to divide the IP address pool obtained by the obtaining unit into at least one IP address segment, and determine at least one tunnel endpoint identifier index according to the at least one IP address segment;
  • an allocating unit configured to allocate at least one IP address segment and the at least one tunnel endpoint identification index determined by the determining unit to the at least one user plane network element.
  • the resource management node provided by the fifth aspect can achieve the same advantageous effects as the first aspect.
  • the present invention provides a resource management node, where the resource management node includes:
  • a transceiver for obtaining an IP address pool
  • a processor configured to divide the IP address pool obtained by the transceiver into at least one IP address segment, and determine at least one tunnel endpoint identifier index according to the at least one IP address segment;
  • the resource management node provided by the sixth aspect can achieve the same advantageous effects as the first aspect.
  • the present invention provides a non-transitory computer readable storage medium storing one or more programs, the one or more programs including instructions, when included
  • the resource management node described in the fifth aspect or the sixth aspect or any of the foregoing possible implementation manners is executed, the resource management node is caused to perform the following events:
  • IP address pool Obtaining an IP address pool, dividing the IP address pool into at least one IP address segment, determining at least one tunnel endpoint identifier index according to at least one IP address segment, and assigning at least one IP address segment and at least one tunnel endpoint identifier index to at least one user plane Network element.
  • the specific implementation manner of the seventh aspect may refer to the behavior function of the resource management node in the service transmission method provided by the first aspect or the possible implementation manner of the first aspect, and details are not repeatedly described herein. Therefore, the resource management node provided by the seventh aspect can achieve the same advantageous effects as the first aspect.
  • the present invention provides a transmission control node, where the transmission control node includes: an acquisition unit, configured to acquire an IP address segment, a tunnel endpoint identifier index, and a correspondence between user plane network elements sent by the resource management node;
  • a notification unit configured to notify the first forwarding node of the correspondence between the IP address segment acquired by the acquiring unit and the user plane network element, and notify the second forwarding node of the correspondence between the tunnel endpoint identifier index and the user plane network element .
  • the specific implementation manner of the eighth aspect may refer to the behavior function of the transmission control node in the service transmission method provided by the second aspect or the possible implementation manner of the second aspect, and details are not repeatedly described herein. Therefore, the transmission control node provided by the eighth aspect can achieve the same advantageous effects as the second aspect.
  • the present invention provides a transmission control node, where the transmission control node includes: a transceiver, configured to acquire an IP address segment, a tunnel endpoint identification index, and a correspondence between user plane network elements sent by the resource management node;
  • the specific implementation manner of the ninth aspect may refer to the behavior function of the transmission control node in the service transmission method provided by the second aspect or the possible implementation manner of the second aspect, and details are not repeatedly described herein. Therefore, the transmission control node provided by the ninth aspect can achieve the same advantageous effects as the second aspect.
  • the present invention provides a non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, when included in the eighth aspect or the ninth aspect or any of the above
  • the transmission control node is caused to perform the following events:
  • the specific implementation manner of the tenth aspect may refer to the behavior function of the transmission control node in the service transmission method provided by the second aspect or the possible implementation manner of the second aspect, and details are not repeatedly described herein. Therefore, the transmission control node provided by the tenth aspect can achieve the same advantageous effects as the second aspect.
  • the present invention provides a first forwarding node, where the first forwarding node includes: an obtaining unit, configured to acquire a correspondence between an IP address segment and a user plane network element;
  • the sending unit is configured to forward the downlink service data sent by the packet data network to the user plane network element according to the correspondence between the IP address segment acquired by the acquiring unit and the user plane network element.
  • the specific implementation manner of the eleventh aspect may refer to the behavior function of the first forwarding node in the service transmission method provided by the third aspect or the possible implementation manner of the third aspect, and details are not repeatedly described herein. Therefore, the first forwarding node provided by the eleventh aspect can achieve the same advantageous effects as the third aspect.
  • the present invention provides a first forwarding node, where the first forwarding node includes: a transceiver, configured to obtain a correspondence between an IP address segment and a user plane network element;
  • the specific implementation manner of the twelfth aspect may refer to the behavior function of the first forwarding node in the service transmission method provided by the third aspect or the possible implementation manner of the third aspect, and details are not repeatedly described herein. Therefore, the first forwarding node provided by the twelfth aspect can achieve the same advantageous effects as the third aspect.
  • the present invention provides a non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, when included in the eighth aspect or the ninth aspect or
  • the first forwarding node is caused to perform the following events:
  • the specific implementation manner of the thirteenth aspect may refer to the behavior function of the first forwarding node in the service transmission method provided by the third aspect or the possible implementation manner of the third aspect, and details are not repeatedly described herein. Therefore, the first forwarding node provided by the thirteenth aspect can achieve the same advantageous effects as the third aspect.
  • the present invention provides a second forwarding node, where the second forwarding node may include: an acquiring unit, configured to acquire a correspondence between a tunnel endpoint identifier and a user plane network element;
  • the sending unit is configured to forward the uplink service data sent by the access network to the user plane network element according to the correspondence between the tunnel endpoint identifier index and the user plane network element acquired by the acquiring unit.
  • the specific implementation manner of the fourteenth aspect may refer to the behavior function of the second forwarding node in the service transmission method provided by the fourth aspect or the possible implementation manner of the fourth aspect, and details are not repeatedly described herein. Therefore, the second forwarding node provided by the fourteenth aspect can achieve the same advantageous effects as the fourth aspect.
  • the present invention provides a second forwarding node, where the second forwarding node may include: a transceiver, configured to acquire a correspondence between a tunnel endpoint identifier and a user plane network element;
  • the specific implementation manner of the fifteenth aspect may refer to the behavior function of the second forwarding node in the service transmission method provided by the fourth aspect or the possible implementation manner of the fourth aspect, and details are not repeatedly described herein. Therefore, the second forwarding node provided in the fifteenth aspect may In order to achieve the same beneficial effects as the fourth aspect.
  • the present invention provides a non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, when included in the eighth or ninth aspect or
  • the second forwarding node is configured to perform the following events:
  • the specific implementation manner of the sixteenth aspect may refer to the behavior function of the second forwarding node in the service transmission method provided by the fourth aspect or the possible implementation manner of the fourth aspect, and details are not repeatedly described herein. Therefore, the second forwarding node provided by the sixteenth aspect can achieve the same advantageous effects as the fourth aspect.
  • the present invention provides a service transmission system, comprising the resource management node according to the fifth aspect or the sixth aspect or the seventh aspect or any one of the foregoing aspects, such as the eighth aspect or the ninth aspect or the tenth
  • the transmission control node according to any one of the preceding aspects, the first forwarding node according to the eleventh or twelfth aspect or the thirteenth aspect or any one of the foregoing, the fourteenth aspect or the fifteenth
  • the service transmission system provided in the seventeenth aspect can implement the service transmission method shown above, and therefore, the same advantageous effects as the above-described service transmission method can be achieved.
  • FIG. 1 is a schematic diagram of a structure of a conventional next generation mobile communication network
  • FIG. 2 is a schematic diagram of a process for resetting a user plane network element
  • FIG. 3 is a schematic structural diagram of a next-generation mobile communication network according to an embodiment of the present invention.
  • FIG. 4 is a structural diagram of a resource management node according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a service transmission method according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of still another service transmission method according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of still another service transmission method according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of still another service transmission method according to an embodiment of the present invention.
  • FIG. 9 is a structural diagram of a resource management node 10 according to an embodiment of the present invention.
  • FIG. 10 is a structural diagram of a transmission control node 20 according to an embodiment of the present invention.
  • FIG. 11 is a structural diagram of a first forwarding node 30 according to an embodiment of the present invention.
  • FIG. 12 is a structural diagram of a second forwarding node 40 according to an embodiment of the present invention.
  • FIG. 13 is a structural diagram of a service transmission system according to an embodiment of the present invention.
  • the principle of the present invention is: adding a resource management node in the original network architecture, segmenting multiple tunnel endpoint identifiers and multiple user equipment IP addresses through the resource management node, and segmenting the tunnel endpoint identifier index and The user equipment IP address segment is allocated to the user plane network element, and the corresponding relationship between the tunnel endpoint identifier index, the user equipment IP address segment, and the user plane network element is notified to the transmission control node, and the transmission control node notifies the forwarding node, so that The forwarding node forwards the service data including the tunnel endpoint identifier or the service data including the user equipment IP address to the corresponding user plane network element, and the user plane network element performs forwarding of the service data.
  • the service transmission method of the present invention can be applied to the next generation mobile shown in FIG.
  • a communication network (English: Next Generation Network, NGN), as shown in FIG. 3, the network may include: multiple forwarding nodes between the access network, the access network, and the user plane network element (eg, forwarding node 1, forwarding) Node 2), resource management node, transmission control node, control plane network element, multiple user plane network elements, multiple forwarding nodes between the user plane network element and the packet data network (eg, forwarding node 3, forwarding node 4) ), as well as the message data network.
  • FIG. 3 is only a schematic diagram, and the nodes shown in FIG. 3 are only examples, and the number thereof is not limited to the solution described in this application, especially the forwarding node, and the number thereof is not limited to several shown in FIG. Different forwarding nodes different from those shown in FIG. 3 can be deployed in the network during actual deployment.
  • the access network in FIG. 3 may be an enhanced long term evolution (eLTE) network, or a third generation partner program of the next generation network access network (English NextGen RAN).
  • the 3rd Generation Partnership Project (3GPP) access network can also be an access network such as a Wireless Local Area Network (WLAN) or a fixed access.
  • the forwarding node between the access network and the user plane network element (for example, the forwarding node 1 and the forwarding node 2) is mainly responsible for forwarding service data between the access network and the user plane network element, and the user plane network element and the packet data.
  • the forwarding node between the network (for example, the forwarding node 3 and the forwarding node 4) is mainly responsible for forwarding the service data between the user plane network element and the packet data network, and the forwarding node may be a routing device such as a switch or a load balancing node.
  • the transmission control node monitors the forwarding node to understand the network status and simultaneously schedules and controls the forwarding of traffic.
  • the resource management node can be a management server, which is mainly responsible for segmenting the Internet Protocol (IP) address of the user equipment and the Tunnel Endpoint Identifier (TEID) to generate the user equipment address IP segment and the tunnel endpoint.
  • IP Internet Protocol
  • TEID Tunnel Endpoint Identifier
  • the index is identified, and the correspondence between the user equipment IP address segment, the tunnel endpoint identifier index, and the user plane network element is established.
  • the control plane network element and the user plane network element are introduced in Figure 1.
  • the user plane network element is mainly responsible for forwarding user service data.
  • the control plane network element is mainly responsible for connection management, security authentication, mobility management, and location management of user equipment.
  • the control plane network element may be modularly split, and the split functional modules may be considered as independent network elements, for example, splitting the CP or CCF into sessions.
  • Function modules such as session management (English: Session Management, SM) and mobility management (English: Mobily Management, MM). Under this logical architecture, the functions of the control plane network elements in the embodiment are managed by the session. :Session Management, SM) Execution.
  • each forwarding node may be independent of other network elements in the network.
  • Deployed in a transport network such as a switch, it can also be deployed in the core network independently of other network elements in the network, such as load balancing nodes. It can also integrate multiple forwarding nodes into existing nodes in the network to implement forwarding nodes.
  • the forwarding node between the user plane network element and the packet data network can be integrated into the user plane network element, and the function of the forwarding node is performed by the user plane network element, which is not limited in this embodiment of the present invention.
  • the resource management node can also be deployed in the network independently of other network elements in the network, and the resource management node can be integrated into an existing node (such as a control plane network element) in the network to implement the function of the resource management node.
  • each node and network element in FIG. 3 may include: a processor, a memory, a communication unit, and at least one communication bus, wherein the communication bus is used to implement connection and mutual communication between the devices.
  • the resource management node is taken as an example, and the components of the resource management node are specifically introduced in conjunction with FIG. 4, and the components of other nodes or network elements may refer to the resource management node, and details are not described herein again.
  • the resource management node 10 can include a processor 1011, a memory 1012, a transceiver 1013, and at least one communication bus 1014 for implementing connections and mutual communication between the devices.
  • the processor 1011 may be a central processing unit (CPU), a network processor (in English: network processor, NP), a hardware chip, or any combination thereof.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the above PLD can be a complex programmable logic device (English: complex programmable logic device, CPLD), field-programmable gate array (FPGA), general array logic (GAL) or any combination thereof.
  • the memory 1012 may be a volatile memory (English: Volatile Memory), such as a random access memory (RAM), or a non-volatile memory (English: Non-volatile Memory), such as read only. Memory (English: Read-only Memory, ROM), flash memory (English: Flash Memory), hard disk (English: Hard Disk Drive, HDD) or solid state drive (English: Solid-state Drive, SSD); or the above types A combination of memories.
  • the processor 1011 can implement various functions of the resource management node by running or executing program code stored in the memory 1012, as well as invoking data stored in the memory 1012.
  • the transceiver 1013 can be used for data interaction with an external network element, and the transceiver 1013 can be an antenna.
  • the communication bus 1014 can be divided into an address bus, a data bus, a control bus, etc., and can be an industry standard architecture (Industry Standard Architecture, ISA) bus, an external device interconnection (English: Peripheral Component, PCI) bus, or an extended industry standard. Architecture (English: Extended Industry Standard Architecture, EISA) bus. For ease of representation, only one thick line is shown in Figure 4, but it does not mean that there is only one bus or one type of bus.
  • Industry Standard Architecture ISA
  • FIG. 5 is a flowchart of a service transmission method according to an embodiment of the present invention.
  • the device in the network shown in Figure 3 is interactively executed.
  • the method may include the following steps:
  • Step S101 The resource management node acquires an IP address pool.
  • the IP address pool may contain a large number of user equipment IP addresses (referred to as IP addresses), and the IP address segment may also contain multiple IP addresses, but the number of IP addresses included in the IP address segment may be much smaller than the IP address included in the IP address pool.
  • IP addresses can be the IP address that the UE communicates with the message data network.
  • the resource management node may be obtained from an operation and maintenance network element (English: Operation and maintenance, O&M).
  • O&M Operation and maintenance
  • Step S102 The resource management node divides the IP address pool into at least one IP address segment, and determines at least one tunnel endpoint identifier index according to the at least one IP address segment.
  • the resource management node may divide multiple user equipment IP addresses in the user equipment IP address pool into multiple user equipment IP address segments as needed, for example, the number of IP addresses that can be included in the IP address segment may be preset.
  • the user equipment IP address in the user equipment IP address pool is divided into a plurality of user equipment IP address segments according to the preset number, wherein the preset number can be set as needed, which is not performed by the embodiment of the present invention. limited.
  • the user equipment IP address can be used.
  • the IP address of the user equipment in the pool is divided into 1000 user equipment IP address segments, and each user equipment IP address segment contains 50,000 user equipment IP addresses.
  • the IP address segment in the step S102 is in one-to-one correspondence with the tunnel endpoint identifier index.
  • each IP address segment may be assigned an index, and the IP address segment is identified by the index.
  • the index is placed in a number of bits of the tunnel endpoint identifier to generate a tunnel endpoint identifier index, so that the tunnel endpoint identifier index is determined according to the IP address segment, and the service data of any IP address included in the IP address segment needs to pass through the tunnel.
  • the tunnel identified by the tunnel endpoint identifier contained in the endpoint identifier index is forwarded.
  • association information may be allocated to the IP address segment, and the tunnel endpoint identifier index corresponding to the IP address segment is determined by using the association information, which is not limited by the present invention; This is not limited to the embodiment of the present invention.
  • the IP address segment 10.184.228.0 to 10.184.228.255 is assigned to the user plane network element 1
  • the index assigned to the IP segment is a binary number 0001
  • the first bit to the 4th of the 16 bits of the tunnel endpoint identifier are specified.
  • the bit is a bit for placing information associated with the IP address segment, and the tunnel endpoint identification index corresponding to the IP address segment assigned to the user plane network element 1 is 0001xxxxxxxxxxxx.
  • the algorithm for the resource management node to allocate an index or other related information to the IP address segment is not limited in the present invention, but each IP address segment is required to have a unique index or associated information, and an index corresponding to the different IP address segments or The associated information is different.
  • the tunnel endpoint identifier is used to identify a tunnel, and the tunnel is a channel between the access network and the user plane network element, and is used to forward service data between the access network and the user plane network element.
  • the tunnel endpoint identifier may be assigned to any user plane network element, and the tunnel endpoint identifier is used to identify a tunnel of the access network and the user plane network element.
  • the tunnel endpoint identifier A identifies a tunnel between the access network and the user plane network element 1
  • the tunnel endpoint identifier A identifies a tunnel between the access network and the user plane network element 2.
  • Step S103 The resource management node allocates at least one IP address segment and at least one tunnel endpoint identification index to at least one user plane network element.
  • IP address segment and the tunnel endpoint identifier index determined according to the IP address segment are allocated to the same user plane network element, and one or more IP address segments that each user plane network element can be divided into, and different user plane network element assignments.
  • the IP address segment is different.
  • the resource management node allocates the tunnel endpoint identifier to the user plane network element, and the service data of the tunnel identified by the tunnel endpoint identifier included in the tunnel endpoint identifier index is forwarded to the packet data network through the user plane network element;
  • the management node allocates an IP address segment to the user plane network element, it indicates that the service data sent by the packet data network to any IP address included in the IP address segment is forwarded to the UE through the user plane network element.
  • the resource management node may allocate, according to the information of the user plane network element in the network shown in FIG. 3, at least one user equipment IP address segment and at least one tunnel endpoint identifier index to each user plane network element in the network.
  • the information of the user plane network element may include: the number of user plane network elements, or the user plane network element capacity, or the number of user plane network elements and the user plane network element capacity.
  • the resource management node may uniformly allocate at least one user equipment IP address segment to each user plane network element in the network according to the information of the user plane network element, and may further at least one according to different user plane network element capacity levels.
  • the user equipment IP address segment is allocated to each user plane network element in the network.
  • the resource management node can divide 1000 user equipment IP address segments into user plane network elements according to the number of user plane network elements. For example, if there are 10 user plane network elements, each user plane network element is allocated to 100 users.
  • the IP address segment of the device for example, the resource management node may allocate 1000 user equipment IP address segments to each user plane network element according to the capacity of each user plane network element, wherein the user plane network element with higher capacity is allocated.
  • Multiple user equipment IP address segments, lower-capacity user plane network elements allocate fewer user equipment IP address segments, for example, there are 30 user plane network elements, of which 10 user plane network elements have the same capacity, and another 20 users
  • the capacity of the surface network element is the same. The capacity of the former is twice that of the latter.
  • For each of the 10 user plane network elements 50 user equipment IP address segments are allocated, and for the other 20 user plane network elements, 25 users are allocated.
  • Device IP address segment for each of the 10 user plane network elements, 50 user equipment IP address segments are allocated, and for the other 20 user plane network
  • the user equipment IP address in the user equipment IP address pool may be divided into multiple user equipment IP address segments according to the information of the user plane network element, and the tunnel endpoint is determined according to the IP address segment.
  • the identifier is indexed, and the IP address segment and the corresponding tunnel endpoint identifier are assigned to each user plane network element.
  • the resource management node can evenly divide the IP address in the IP address pool of the user equipment into the number of copies corresponding to the number of user plane NEs according to the number of user plane NEs; or the resource management node according to the capacity of the network element of different user planes
  • the IP address in the IP address pool is divided into the number of copies corresponding to the number of user plane NEs, and the user plane NEs with high capacity are allocated more user equipment IP addresses.
  • Step S104 The resource management node notifies the first forwarding node of the correspondence between the IP address segment assigned to the user plane network element and the user plane network element, and the first forwarding node receives the IP of the user plane network element notified by the resource management node.
  • the correspondence between the address segment and the user plane network element is not limited to the resource management node.
  • the first forwarding node may be any forwarding node located between the user plane network element and the packet data network in the network where the resource management node is located. As shown in Figure 3, forwarding node 3 and forwarding node 4.
  • Step S105 The resource management node notifies the second forwarding node of the correspondence between the tunnel endpoint identifier index assigned to the user plane network element and the user plane network element, and the second forwards the tunnel of the user plane network element notified by the receiving resource management node. Correspondence between the endpoint identification index and the user plane network element.
  • the second forwarding node may be any forwarding node located between the access network and the user plane network element in the network where the resource management node is located. As shown in Figure 3, forwarding node 1 or forwarding node 2.
  • step S104 and step S105 may be changed, may be performed simultaneously, or may be performed sequentially without depending on the order in FIG. 5.
  • the resource management node may between the IP address segment, the tunnel endpoint identifier index, and the user plane network element.
  • the corresponding relationship is notified to the transmission control node, and the correspondence between the IP address segment allocated to the user plane network element and the user plane network element is notified to the first forwarding node and the network element to be allocated to the user plane network element by the transmission control node.
  • the correspondence between the tunnel endpoint identifier index and the user plane network element is notified to the second forwarding node.
  • the corresponding relationship between the IP address segment of the transmission control node, the tunnel endpoint identifier index, and the user plane network element is notified to the corresponding relationship between the IP address segment of the first forwarding node and the user plane network element, and the notification is notified.
  • Step 106 The second forwarding node forwards the uplink service data sent by the access network to the user plane network element according to the correspondence between the tunnel endpoint identifier and the user plane network element.
  • Step 107 The first forwarding node forwards the downlink service data sent by the packet data network to the user plane network element according to the correspondence between the IP address segment and the user plane network element.
  • the service data sent from the UE to the packet data network is referred to as uplink service data
  • the service data sent from the packet data network to the UE is referred to as downlink service data.
  • the configuration of the service data forwarding on the user plane network element is not required, and there is no necessary binding relationship between the user equipment IP address and the user plane network element.
  • the resource management node manages the user equipment IP address and the tunnel endpoint identifier, and maintains the correspondence between the tunnel endpoint identifier index, the user equipment IP address segment, and the user plane network element, and notifies the corresponding relationship to the forwarding through the transmission control node.
  • the node sends the service data of the user equipment to the corresponding user plane network element according to the corresponding relationship to implement the forwarding of the service data.
  • the resource management node can dynamically adjust the correspondence according to the situation in the network, and keep the user equipment in the IP.
  • the user service data is forwarded through the new user plane network element.
  • the user equipment is not required to re-establish a data connection with the user plane network element, thereby avoiding the problem of service interruption of the user equipment.
  • the method can simplify the user plane network element. Configure to implement configuration-free configuration of user plane NEs to support plug-and-play of user plane NEs.
  • FIG. 5 can be applied to network initialization, user plane network element reset/overload, or any scenario in which a user plane network element is added, to implement the user plane free configuration, and reset/overload/ Add business continuity under the scenario.
  • FIG. 6 is a flowchart of a service transmission method according to an embodiment of the present invention, which is performed by a device in the network shown in FIG. 3, and is used for each user plane network element in the network shown in FIG. 3 during network initialization.
  • the resource management node obtains an IP address pool from the O&M.
  • the resource management node divides the IP address pool into at least one IP address segment, and determines at least one tunnel endpoint identifier index according to the at least one IP address segment.
  • Step S201 is the same as step S102, and details are not repeated herein.
  • S202 The resource management node allocates an IP address segment and a tunnel endpoint identifier index to each user plane network element shown in FIG. 3.
  • step S202 is the same as the process of the step S103, and the details are not repeated here.
  • S203 The resource management node notifies each user plane network element, the assigned user equipment IP address segment and the tunnel endpoint identifier index.
  • the resource management node may directly notify each user plane network element, the assigned IP address segment and the tunnel endpoint identifier index, and may also notify each user plane network element by using the control plane network element, and the assigned IP address segment. And the tunnel endpoint identification index.
  • step S203 may or may not be performed, that is, the user equipment IP address segment and the tunnel endpoint identifier index allocated by the user plane network element may be known or unknown to the user plane network element. It is possible, and the present invention does not limit this.
  • the resource management node notifies the forwarding node 3 of the correspondence between the user plane network element and the IP address segment, and notifies the forwarding node 1 of the correspondence between the user plane network element and the tunnel endpoint identifier index.
  • the resource management node can also notify the forwarding node 4 of the correspondence between the user plane network element and the IP address segment, and notify the forwarding node 2 of the correspondence between the user plane network element and the tunnel endpoint identifier index, or the user.
  • the correspondence between the surface network element and the IP address segment is simultaneously notified to the forwarding nodes 1 and 4, and the correspondence between the user plane network element and the tunnel endpoint identifier index is simultaneously notified to the forwarding nodes 1 and 2.
  • the embodiment of the present invention does not limit this.
  • the present invention notifies the forwarding node 3 of the correspondence between the user plane network element and the IP address segment, and notifies the forwarding node 1 of the correspondence between the user plane network element and the tunnel endpoint identifier index.
  • the resource management node may directly pair the user plane network element and the IP address segment.
  • the forwarding node 3 is notified of the relationship, and the correspondence between the user plane network element and the tunnel endpoint identifier index is notified to the forwarding node 1.
  • the corresponding relationship between the user plane network element, the user equipment IP address segment, and the tunnel endpoint identifier index may be notified to the transmission control node, where the corresponding relationship is the identifier of each user plane network element, and the user equipment IP to which it is assigned.
  • An address segment and a tunnel end identifier, where the user plane network element identifier may be a user plane network element IP address, or a user plane network element ID, such as information that can uniquely identify the user plane network element;
  • the transmission control node After receiving the correspondence between the user plane network element, the user equipment IP address segment, and the tunnel endpoint identifier index sent by the resource management node, the transmission control node notifies the forwarding node 3 of the correspondence between the user plane network element and the IP address segment, and The correspondence between the user plane network element and the tunnel endpoint identifier index is notified to the forwarding node 1.
  • S205 The UE sends a connection establishment request to the control plane network element, where the connection establishment request is used to establish a connection with the packet data network.
  • the UE may send a connection establishment request to the control plane network element through the access network.
  • connection establishment request After the control plane network element receives the connection establishment request, if the user plane network element 1 is determined to forward the service data between the UE and the packet data network, the tunnel endpoint identifier of the user plane network element 1 is allocated to the access network. And returning a connection establishment response message to the UE, where the connection establishment response message includes an IP address allocated by the control plane network element to the UE.
  • the UE is established through the connection channel between the user plane network element 1 and the packet data network. After the control plane network element completes the connection establishment, step S207 is performed.
  • the tunnel endpoint identifier of the user plane network element 1 is included in the tunnel endpoint identifier included in the tunnel endpoint identifier index allocated by the resource management node for the user plane network element 1.
  • a tunnel endpoint identifier may be randomly specified in the tunnel endpoint identifier index allocated by the resource management node for the user plane network element 1, and the tunnel endpoint identifier is used as the tunnel endpoint identifier of the user plane network element 1 of the connection that the UE requests to establish.
  • the tunnel endpoint identifier of the user plane network element 1 can be used to identify a unique tunnel of the user plane network element 1.
  • the control plane network element selects the user plane network element 1 to forward the service data of the connection 1, and the resource management node includes the tunnel endpoint identifier index allocated to the user plane network element 1 50 tunnel endpoint identifiers, then The tunnel endpoint identifier is selected from the endpoint identifiers of the 50 tunnels, and the selected tunnel endpoint identifier is used as the tunnel endpoint identifier of the user plane network element 1.
  • the IP address of the UE is included in the IP address segment allocated by the resource management node for the user plane network element 1; optionally, the control plane network element may be randomly selected from the IP address segment allocated by the resource management node for the user plane network element 1 Select an IP address as the IP address of the UE.
  • each user plane network element may be divided into multiple user equipment IP address segments, and multiple tunnel endpoint identifier indexes determined according to multiple user equipment IP address segments.
  • a user equipment IP address segment and a tunnel endpoint identification index determined according to it are referred to as a pair relationship.
  • the tunnel endpoint identifier of the user plane network element 1 and the IP address of the UE are allocated in this step, the tunnel endpoint identifier index including the tunnel endpoint identifier, and the user equipment IP address segment including the IP address of the UE are in a pair relationship. .
  • the tunnel endpoint identifier of the user plane network element 1 may be directly allocated to the access network by the control plane network element. And assigning an IP address to the UE; otherwise, if the control plane network element and the resource management node are separate functional network elements, the tunnel endpoint identifier of the user plane network element 1 is allocated to the access network, and the function of assigning an IP address to the UE may be Executed by the resource management node, for example, the control plane network element may request the resource management node to request the tunnel endpoint identifier of the user plane network element 1 and the IP address of the UE, and the resource management node allocates the tunnel endpoint identifier of the user plane network element 1 to the resource management node. The network is assigned, and the IP address is allocated to the UE.
  • the method for allocating the resource management network element is the same as the method for assigning the network element of the control plane.
  • the control plane network element notifies the user plane network element 1 of the established connection context, where the connection context includes the tunnel endpoint identifier of the user plane network element 1 allocated to the access network and the IP address allocated to the UE.
  • S208 The UE sends uplink service data to the access network.
  • the access network After receiving the uplink service data, the access network encapsulates the tunnel end identifier of the user plane network element 1 in the uplink service data, and sends the encapsulated uplink service data to the forwarding node 1.
  • the forwarding node 1 After receiving the uplink service data, the forwarding node 1 obtains the data according to step 204. The corresponding relationship between the user plane network element and the tunnel endpoint identifier index and the tunnel endpoint identifier in the uplink service data are sent to the user plane network element 1 for uplink service data.
  • the forwarding node 1 may query the correspondence between the user plane network element and the tunnel endpoint identifier index, and find the user plane network element corresponding to the tunnel endpoint identifier index of the tunnel endpoint identifier in the uplink service data, that is, the user plane network element. 1. Send uplink service data to the user plane network element 1.
  • the user plane network element 1 After receiving the uplink service data, the user plane network element 1 matches the information of the tunnel endpoint identifier in the uplink service data to the connection context, decapsulates the protocol layer including the tunnel endpoint identifier, and forwards the uplink service data to the packet. Data network.
  • the user plane network element 1 receives the uplink service data, the information such as the tunnel endpoint identifier in the uplink service data does not match the connection context, and the uplink service data is not forwarded to the packet data network.
  • the UE may also receive downlink service data sent by the packet data network, as shown in FIG. 6 :
  • the packet data network sends downlink service data to the forwarding node 3, where the downlink service data includes an IP address of the UE.
  • the forwarding node 3 After receiving the downlink service data, the forwarding node 3 sends the downlink service data to the user plane network element 1 according to the correspondence between the user plane network element and the IP address segment obtained in step 104 and the IP address of the UE in the downlink service data. .
  • the forwarding node 3 can query the corresponding relationship between the user plane network element and the IP address segment, and find the user plane network element corresponding to the IP address segment where the IP address of the UE is located in the downlink service data, that is, the user plane network element 1,
  • the downlink service data is sent to the user plane network element 1.
  • the user plane network element 1 After receiving the downlink service data, the user plane network element 1 matches the information of the IP address of the UE in the downlink service data to the connection context, and forwards the downlink service data to the UE according to the information in the connection context.
  • the downlink service data is not forwarded to the access network.
  • the service data of the UE can be realized by the user plane through the scheme shown in FIG. 6.
  • NE 1 forwards.
  • the resource management node may reassign the user equipment IP address segment and the tunnel endpoint identifier index originally assigned to the user plane node 1 by using the user equipment IP address segment of the user plane node 1 as the address pool for segmentation reallocation.
  • the user equipment IP address segment and the tunnel endpoint identification index of all or part of the user plane node 1 are reassigned to other normal user plane nodes.
  • the implementation process is as shown in FIG. 7:
  • the resource management node detects that the user plane network element 1 is faulty.
  • the fault of the user plane network element 1 may be the user plane network element 1 or may be overloaded for the user plane network element 1.
  • the specific detection method is not limited in the embodiment of the present invention, and may be controlled by the network element of the plane.
  • the other nodes are aware that the user plane network element 1 is faulty, and the user plane network element 1 may be faulty through the detection and monitoring between the resource management node and the user plane network element 1.
  • the overload of the user plane network element 1 may be: the load on the user plane network element 1 (such as the number of accessed service data packets) is greater than or equal to a preset threshold, or the central processing unit on the user plane network element 1 (English: Central The load of the processing unit (CPU) is greater than or equal to the preset threshold, or the memory consumption on the user plane network element 1 is greater than or equal to the preset threshold.
  • the preset threshold may be set as needed, which is not limited in this embodiment of the present invention.
  • the resource management node divides the IP address segment originally allocated to the user plane network element 1 into an IP address pool, divides the IP address pool into at least one IP address segment, and determines at least one tunnel endpoint identifier index according to at least one IP address segment. .
  • the resource management node may re-divide the IP address segment originally allocated to the user plane network element 1 into at least one IP address segment by using the same steps as the step S102, and determine at least one tunnel endpoint identifier index according to the at least one IP address segment. process.
  • the resource management node may not perform the re-segmentation of the IP address segment, and directly obtain the already-divided IP address segment of the user plane network element 1 and the tunnel endpoint identifier index corresponding to the IP address segment as at least one IP address. Segment and at least one tunnel end Point identification index.
  • the resource management node allocates at least one IP address segment and at least one tunnel endpoint identifier index in step S302 to other user plane network elements except the user plane node 1 in FIG.
  • At least one IP address segment and at least one tunnel endpoint identifier may be reassigned to the user plane network element 2, the user plane network element 3, and the user plane network element 4.
  • the allocation process in step S303 is the same as the process in step S103.
  • the details of the user plane network elements other than the first user plane node may be one or more user plane network elements.
  • the resource management node may reassign all IP address segments and tunnel endpoint identifier indexes of the user plane network element 1 to other normal user plane networks. yuan.
  • the resource management node may allocate the partial IP address segment of the user plane network element 1 and the tunnel endpoint identifier index to other user plane network elements, so as to alleviate the overload state of the user plane network element 1.
  • the resource management node notifies other user plane network elements, the assigned user equipment IP address segment and the tunnel endpoint identifier index.
  • step S304 is the same as the process in step S203, and details are not repeated herein.
  • the resource management node notifies the forwarding node 3 of the correspondence between the user plane network element and the IP address segment, and notifies the forwarding node 1 of the correspondence between the user plane network element and the tunnel endpoint identifier index.
  • the resource management node may directly notify the forwarding node 3 of the correspondence between the user plane network element and the IP address segment, and notify the forwarding node 1 of the correspondence between the user plane network element and the tunnel endpoint identifier index.
  • the corresponding relationship between the user plane network element, the user equipment IP address segment, and the tunnel endpoint identifier index may be notified to the transmission control node, where the corresponding relationship is the identifier of each user plane network element, and the user equipment IP to which it is assigned.
  • An address segment and a tunnel endpoint identifier, where the user plane network element identifier may be a user plane network element IP address or a user plane network element ID Information that uniquely identifies the user plane network element;
  • the transmission control node After receiving the correspondence between the user plane network element, the user equipment IP address segment, and the tunnel endpoint identifier index sent by the resource management node, the transmission control node notifies the forwarding node 3 of the correspondence between the user plane network element and the IP address segment, and The correspondence between the user plane network element and the tunnel endpoint identifier index is notified to the forwarding node 1.
  • step S305 is the same as the process in step S204, and details are not repeated herein.
  • the resource management node notifies the control plane network element of the correspondence between the IP address segment, the tunnel endpoint identifier index, and the user plane network element.
  • step S305 and step S306 may be changed, and does not depend on the order in the figure.
  • S307 The UE sends uplink service data to the access network.
  • the access network After receiving the uplink service data, the access network encapsulates the tunnel end identifier of the user plane network element 1 in the uplink service data, and sends the encapsulated uplink service data packet to the forwarding node 1.
  • the user plane network element 2 After receiving the uplink service data, the user plane network element 2 matches the information of the tunnel endpoint identifier in the uplink service data to the connection context, decapsulates the protocol layer including the tunnel endpoint identifier, and forwards the uplink service data to the packet. Data network.
  • the UE may also receive downlink service data sent by the packet data network, as shown in FIG. 5:
  • the packet data network sends downlink service data to the forwarding node 3, where the downlink service data includes an IP address of the UE.
  • the user plane network element 2 After receiving the downlink service data packet, the user plane network element 2 matches the information of the IP address of the UE in the downlink service data to the connection context, and forwards the downlink service data to the UE according to the information in the connection context.
  • connection context in step S310 and step S313 can be obtained in the following two ways:
  • the control plane network element After receiving the corresponding relationship between the IP address segment, the tunnel endpoint identifier index, and the user plane network element, the control plane network element sends the affected connection context to the new user plane network element.
  • the affected connection context is the connection context originally established in the user plane network element 1, because the context-related user equipment IP address and the tunnel endpoint identifier are reassigned to the user plane network element 2, so the connection context is also Send to user plane network element 2.
  • the user plane network element 2 After receiving the uplink service data, the user plane network element 2 cannot obtain the corresponding connection context according to the tunnel endpoint identifier, and the user plane network element 2 obtains the connection context from the control plane network element.
  • the user plane network element 2 carries the tunnel endpoint identifier in the message and sends the message to the control plane network element.
  • the control plane network element searches for the corresponding connection context according to the tunnel endpoint identifier, and sends the corresponding connection context to the user plane network element 2.
  • the user plane network element 2 After receiving the downlink service data, the user plane network element 2 cannot query the corresponding connection context according to the information such as the IP address of the UE, and the user plane network element 2 acquires the connection context from the control plane network element.
  • the user plane network element 2 carries the IP address of the UE in the message and sends the message to the control plane network element.
  • the control plane network element searches for the corresponding connection context according to the IP address of the UE, and sends the corresponding connection context to the user plane network element 2.
  • the resource management node reassigns the user equipment IP address segment and the tunnel endpoint identification index assigned to the faulty or overloaded user plane network element to other user plane network elements that communicate normally, and transmits the assigned correspondence relationship through the transmission.
  • the control node notifies the forwarding node that the service data packet of the UE is forwarded by the new user plane network element according to the corresponding relationship, so that the service of the user equipment is not interrupted in the case of the user plane network element failure/overload. In the case of changing the service data packet of the forwarding user equipment User network element.
  • the management node may reassign the user equipment IP address segment and the tunnel endpoint identification index originally assigned to the user plane nodes 1, 2, and 3 to the user plane network element 4.
  • the resource management node may adopt A variety of principles redistribute user equipment IP address segments and tunnel endpoint identification indexes.
  • the node with excessive load is selected, and the user equipment IP address segment and the tunnel endpoint identification index of the original user plane node are allocated to the newly added user plane node 4.
  • the node with the smallest capacity is selected among the user plane nodes 1, 2, and 3.
  • the user equipment IP address segment and the tunnel endpoint identification index of the original user plane node are allocated to the newly added user plane node 4.
  • the technical solution provided by the embodiment of the present invention is introduced, for example, by assigning a part of the IP address segment and the tunnel end point identification index originally assigned to the user plane network element 1 to the newly added user plane network element 4.
  • the method may include:
  • the resource management node uses a partial IP address segment originally allocated to the user plane network element 1 as an IP address pool, divides the IP address pool into at least one IP address segment, and determines at least one tunnel endpoint identifier according to at least one IP address segment. index.
  • the step S401 may re-divide the partial IP address segment originally allocated to the user plane network element 1 into at least one IP address segment by using the same process as step S102, and determine at least one tunnel endpoint according to the re-divided at least one IP address segment. Identification index.
  • the resource management node may also perform the re-segmentation of the IP address segment, and directly obtain the part of the IP address segment of the user plane network element 1 and the tunnel endpoint identifier index corresponding to the IP address segment as at least one IP address.
  • the segment and at least one tunnel endpoint identify the index.
  • the user plane network element 1 has five IP address segments and five IP address segments.
  • the tunnel endpoint identifies the index, and the resource management node directly obtains the three IP address segments and the tunnel endpoint identifier index corresponding to the three IP address segments.
  • the resource management node allocates at least one IP address segment and at least one tunnel endpoint identifier index in step S301 to the user plane network element 4.
  • step S302 is the same as the process of the step S103, and details are not described herein again.
  • the resource management node notifies the user plane network element 1 and the user plane network element 4, the assigned user equipment IP address segment and the tunnel endpoint identifier index.
  • step S403 is the same as the process in step S203, and details are not repeated herein.
  • the resource management node notifies the forwarding node 3 of the correspondence between the user plane network element and the IP address segment, and notifies the forwarding node 1 of the correspondence between the user plane network element and the tunnel endpoint identifier index.
  • the resource management node may notify the forwarding node 3 of the correspondence between the user plane network element and the IP address segment by the transmission control node, and notify the forwarding node 1 of the correspondence between the user plane network element and the tunnel endpoint identifier index.
  • step S404 is the same as the process in step S304, and details are not described herein again.
  • the resource management node notifies the control plane network element of the correspondence between the IP address segment, the tunnel endpoint identifier index, and the user plane network element.
  • step S404 and step S405 may be changed, and does not depend on the order in the figure.
  • S406 The UE sends uplink service data to the access network.
  • the access network After receiving the uplink service data, the access network encapsulates the tunnel end identifier of the user plane network element 1 in the uplink service data, and sends the encapsulated uplink service data to the forwarding node 1.
  • the forwarding node 1 obtains the user plane network element and the tunnel endpoint identifier index obtained in step 404. Correspondence relationship and uplink business The tunnel endpoint identifier in the data sends uplink service data to the user plane network element 4.
  • the user plane network element 4 After receiving the uplink service data packet, the user plane network element 4 matches the information of the tunnel endpoint identifier in the uplink service data to the connection context, decapsulates the protocol layer including the tunnel endpoint identifier, and forwards the uplink service data to the report. Text data network.
  • the UE may also receive downlink service data sent by the packet data network, as shown in FIG. 8:
  • the packet data network sends downlink service data to the forwarding node 3, where the downlink service data includes an IP address of the UE.
  • the user plane network element 4 After receiving the downlink service data packet, the user plane network element 4 matches the information of the IP address of the UE in the downlink service data to the connection context, and forwards the downlink service data to the UE according to the information in the connection context.
  • connection context in step S409 and step S412 can be obtained by the following two methods:
  • the control plane network element After receiving the corresponding relationship between the IP address segment, the tunnel endpoint identifier index, and the user plane network element, the control plane network element sends the affected connection context to the new user plane network element. That is, the connection context originally established in the user plane network element 1, after the context-related user equipment IP address and the tunnel endpoint identifier are reassigned to the user plane network element 4, the connection context is also sent to the user plane network element 4.
  • the user plane network element 4 After receiving the uplink service data, the user plane network element 4 cannot obtain the corresponding connection context according to the tunnel endpoint identifier, and the user plane network element 4 obtains the connection context from the control plane network element.
  • the user plane network element 4 carries the tunnel endpoint identifier in the message and sends the message to the control plane network element.
  • the control plane network element searches for the corresponding connection context according to the tunnel endpoint identifier, and sends the corresponding connection context to the user plane network element 4.
  • the user plane network element 4 After receiving the downlink service data, the user plane network element 4 cannot query the corresponding connection context according to the information such as the IP address of the UE, and then the user plane network element 4 is directed to the control plane.
  • the network element obtains the connection context.
  • the user plane network element 4 carries the IP address of the UE in the message and sends the message to the control plane network element.
  • the control plane network element searches for the corresponding connection context according to the IP address of the UE, and sends the corresponding connection context to the user plane network element 4.
  • the IP address of the original user plane network element and the tunnel endpoint identifier can be assigned to other newly added user plane network elements without interrupting the service of the user equipment, and after being allocated,
  • the corresponding relationship is notified to the forwarding node by the transmission control node, and the forwarding node forwards the service data packet of the UE to the user plane network element according to the corresponding relationship, thereby realizing load sharing between the user plane network elements, and at the same time,
  • the configuration can be implemented when the user plane network element is added to the network, and the plug-and-play of the newly added user plane network element is achieved.
  • the service transmission method provided by the embodiment of the present invention is introduced from the perspectives of the resource management node, the transmission control node, the user plane network element, the control plane network element, the forwarding node, the access network, the UE, and the packet data network.
  • the above-mentioned nodes or network elements include corresponding hardware structures and/or software modules for performing respective functions.
  • the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.
  • the embodiment of the present invention may divide the functional modules of the resource management node, the transmission control node, the first forwarding node, and the second forwarding node according to the foregoing method example, and with reference to FIG. 9 to FIG. 12, for example, each function module may be divided according to each function. It is also possible to integrate two or more functions into one processing module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present invention is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • FIG. 9 is the present invention.
  • the resource management node 10 may be used to implement a method performed by the resource management node in the foregoing method embodiment, and the resource management node 10
  • the method may include: an obtaining unit 101, a determining unit 102, an allocating unit 103, such as: the obtaining unit 201 is configured to support the resource management node to execute the process S101 in FIG. 5, and the determining unit 102 is configured to support the resource management node to perform the process S102 in FIG.
  • the allocating unit 103 is configured to support the resource management node to execute the processes S104 and S105 in FIG.
  • the resource management node 10 may further include: a notification unit 104, corresponding to performing some processes in the foregoing method embodiments.
  • the obtaining unit 101, the determining unit 102, and the allocating unit 103 shown in FIG. 9 can be integrated together as a processing module for controlling and managing the actions of the resource management node 10,
  • the processing module is configured to support the resource management node to perform processes S101-S105 in FIG. 5, and/or other processes for the techniques described herein.
  • the notification unit 104 can be integrated in the communication module for supporting communication of the resource management node 10 with other network entities.
  • the resource management node 10 may also include a storage module for storing program code and data of the resource management node 10.
  • the processing module may be the processor 1011 in the physical structure of the resource management node 10 shown in FIG.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication module may be the transceiver 1013 in the physical structure of the resource management node 10 shown in FIG. 4, or may be a transceiver circuit or a communication interface or the like.
  • the storage module may be a memory in the physical structure of the resource management node 10 shown in FIG.
  • FIG. 10 is the present invention.
  • the transmission control node 20 may be used to implement a method performed by a transmission control node in the foregoing method embodiment, the transmission control node 20
  • the acquiring unit 201 and the notifying unit 202 are configured to support the transmission control node 20 to acquire the correspondence between the IP address notified by the resource control node 10, the tunnel endpoint identifier index, and the user plane network element, and the notification unit.
  • the 202 is configured to support the transmission control node 20 to notify the first forwarding node of the correspondence between the IP address and the user plane network element, and to notify the transmission control node 20 of the correspondence between the tunnel endpoint identifier index and the user plane network element.
  • the second forwarding node is configured to support the transmission control node 20 to notify the first forwarding node of the correspondence between the IP address and the user plane network element, and to notify the transmission control node 20 of the correspondence between the tunnel endpoint identifier index and the user plane network element.
  • the obtaining unit 201 and the notifying unit 202 shown in FIG. 10 may be integrated in the communication module for supporting communication between the transmission control node 20 and other network entities.
  • the transmission control node 20 may further include a processing module, a storage module, and a processing module for implementing a control function in the transmission control node 20 for storing program codes and data of the transmission control node 20.
  • the processing module may be a processor in the physical structure of the transmission control node 20, and may be a processor or a controller, such as a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, and a transistor logic device. , hardware components, or any combination thereof.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication module may be a transceiver in a physical structure of the transmission control node, or may be a transceiver circuit or a communication interface or the like.
  • the storage module can be a memory in the physical structure of the transport control node.
  • FIG. 11 is a schematic structural diagram of a first forwarding node involved in the embodiment of the present invention.
  • the first forwarding node 30 may be used in the case of dividing each functional module by using corresponding functions.
  • the method performed by the first forwarding node in the foregoing method embodiment, the first forwarding node 30 may include: an obtaining unit 301 and a sending unit 302.
  • the obtaining unit is configured to support the first forwarding node 30 to perform the method shown in FIG.
  • the sending unit 302 is configured to support the first forwarding node 30 to perform step S107 shown in FIG.
  • the obtaining unit 301 and the transmitting unit 302 shown in FIG. 11 may be integrated in the communication module for supporting communication between the first forwarding node 30 and other network entities.
  • the first forwarding node 30 may further include a processing module and a storage module.
  • the processing module is configured to implement a control function in the first forwarding node 30 for storing program codes and data of the first forwarding node 30.
  • the processing module may be a processor in the physical structure of the first forwarding node 30, and may be a processor or a controller, such as a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, and a transistor logic. Device, hardware component, or any combination thereof.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication module may be a transceiver in a physical structure of the first forwarding node, or may be a transceiver circuit or a communication interface or the like.
  • the storage module may be a memory in the physical structure of the first forwarding node.
  • FIG. 12 is a schematic structural diagram of a second forwarding node involved in the embodiment of the present invention.
  • the second forwarding node 40 may be used.
  • the method performed by the second forwarding node in the foregoing method embodiment is implemented.
  • the second forwarding node 40 may include: an obtaining unit 401 and a sending unit 402.
  • the acquiring unit is configured to support the second forwarding node 40 to perform step S104 shown in FIG.
  • the transmitting unit 402 is configured to support the second forwarding node 40 to perform step S106 shown in FIG.
  • the obtaining unit 401 and the transmitting unit 402 shown in FIG. 12 may be integrated in the communication module for supporting communication between the second forwarding node 40 and other network entities.
  • the second forwarding node 40 may further include a processing module and a storage module.
  • the processing module is configured to implement a control function in the second forwarding node 40 for storing program codes and data of the second forwarding node 40.
  • the processing module may be a processor in a physical structure of the second forwarding node 40, and may be a processor or a controller, such as a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA, or other programmable logic device, and a transistor logic. Device, hardware component, or any combination thereof.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication module may be a transceiver in a physical structure of the second forwarding node, or may be a transceiver circuit or a communication interface or the like.
  • the storage module may be a memory in the physical structure of the second forwarding node.
  • the embodiment of the present invention further provides a service transmission system.
  • the service transmission system may include: the resource management node 10, the transmission control node 20, and the first forwarding according to any of the foregoing embodiments.
  • a device such as a node 30, a second forwarding node 40, a UE, a user plane network element, and a packet data network.
  • the service transmission system provided by the embodiment of the present invention implements the foregoing service transmission method shown in FIG. 5 to FIG. 8 , and therefore, the same beneficial effects as the foregoing service transmission method can be achieved, and details are not repeatedly described herein.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.
  • the unit described as a separate component may or may not be physically divided
  • the components displayed as the unit may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network devices. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each functional unit may exist independently, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the software functional units described above are stored in a storage medium and include instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform portions of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: Universal Serial Bus (USB) flash drive (English: USB flash drive), mobile hard disk, read-only memory (English: read-only memory, ROM), random access

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Abstract

L'invention concerne un procédé, un dispositif et un système de transmission de service relevant du domaine technique des communications et destinés à régler le problème d'une interruption de service d'un équipement utilisateur due au dysfonctionnement d'un élément de réseau de plan d'utilisateur. Le procédé comprend les étapes au cours desquelles un nœud de gestion de ressources : obtient un groupe d'adresses IP; divise le groupe d'adresses IP en au moins un segment d'adresse IP; détermine au moins un indice d'identification de point d'extrémité de tunnel en fonction dudit au moins un segment d'adresse IP; et attribue ledit au moins un segment d'adresse IP et ledit au moins un indice d'identification de point d'extrémité de tunnel à au moins un élément de réseau de plan d'utilisateur.
PCT/CN2016/101404 2016-09-30 2016-09-30 Procédé, dispositif et système de transmission de service WO2018058682A1 (fr)

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CN201680089779.6A CN109804710B (zh) 2016-09-30 2016-09-30 一种业务传输方法、设备及系统
EP16917432.3A EP3512300B1 (fr) 2016-09-30 2016-09-30 Transmission de service sur la base d'une correspondance entre un index à un identificateur de point de terminaison de tunnel, un segment d'adresse ip d'un équipement d'utilisateur et un élément de réseau d'un plan d'utilisateur
PCT/CN2016/101404 WO2018058682A1 (fr) 2016-09-30 2016-09-30 Procédé, dispositif et système de transmission de service
US16/370,638 US10979285B2 (en) 2016-09-30 2019-03-29 Service transmission method, device, and system

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CN109804710A (zh) 2019-05-24
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CN109804710B (zh) 2021-10-01
US20190230060A1 (en) 2019-07-25
EP3512300B1 (fr) 2021-04-28

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